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An Integrated Radar Tile for Digital Beamforming X-/Ka-Band Synthetic Aperture Radar Instruments

2019; IEEE Microwave Theory and Techniques Society; Volume: 67; Issue: 3 Linguagem: Inglês

10.1109/tmtt.2018.2889038

1557-9670

Emilio Arnieri, Luigi Boccia, Giandomenico Amendola, Srdjan Glisic, Chunxu Mao, Steven Gao, Tobias Rommel, Piotr Penkala, Miloš Krstić, Uroschanit Yodprasit, Anselm Ho, Oliver Schrape, Marwan Younis,

Synthetic Aperture Radar (SAR) Applications and Techniques

This paper presents the first experimental assessment of a highly integrated dual-band dual-polarized antenna tile designed for synthetic aperture radar (SAR) digital beamforming (DBF) satellite applications. The demonstrator described in this paper is the first comprehensive experimental validation of an RF module providing the X-band and Ka-band (9.6- and 35.75-GHz) operation with custom downconversion stages. All the antennas, transitions, and downconversion chips are integrated in the same antenna tile fabricated using a customized 15-layer high density interconnect process. The designed tile goes to the limits of the proposed technology and for the high trace density and for the size of the vertical transitions. The proposed results represent the state of the art in terms of compactness for a DBF SAR RF module even though the demonstrator was manufactured with a standard low-cost technology. The experimental assessment proves the validity of the proposed manufacturing and integration approaches showing a substantial agreement between the performance of the individual blocks and of the integrated system.